Plenary Americas is an infrastructure company that specializes in the development and financing of public infrastructure projects. They are known for their expertise in sectors such as transportation, healthcare, education, water, and energy. It is a part of the Plenary Group, an international company with a focus on public-private partnerships (PPPs) and infrastructure investment. It collaborates with governments and other stakeholders to develop, finance, and operate public infrastructure projects through PPPs. These partnerships involve a combination of public and private sector resources to deliver projects that benefit the community.

It has a diverse portfolio of projects, including transportation infrastructure such as highways, bridges, and transit systems, as well as social infrastructure like healthcare facilities and educational institutions. The company is involved in various stages of a project's lifecycle, from initial planning and development to financing, construction, operations, and maintenance. They aim to provide comprehensive solutions and long-term value for their clients.